Patents by Inventor Franz Holzlwimmer

Franz Holzlwimmer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for producing molded bodies from granular material of silicon, germanium or mixed crystals of these elements
    Patent number: 4767585
    Abstract: A process for preparing molded bodies of granular material of silicon, germanium or mixed crystals of these elements. The granular material is introduced into a defined three dimensional mold and a chemical transport reaction is started which proceeds with the transport of silicon or germanium. As a result, the particles of the granular material intergrow with each other and eventually form a solid, porous molded body. By varying the starting material, the transport agent, and by adding dopants, the electrical properties of the product can be varied.
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: August 30, 1988
    Assignee: Heliotronic GmbH
    Inventors: Claus Holm, Erhard Sirtl, Josef Dietl, Franz Holzlwimmer